Method for Improving the Comparative Tracking Index of Polymer Composites
| Publication Number: |
IN201404239I4 |
| Application Date: |
31. 08. 2014 |
| Assignee/Applicant: |
Sabu Thomas [IN], Jožef Stefan Institute [SI] |
| Inventor: |
Harinarayanan Puliyalil, Uroš Cvelbar, Miran Mozetič, Sabu Thomas |
| Title: |
Method for Improving the Comparative Tracking Index of Polymer Composites (original title), Increasing comparative tracking index of electrical devices, used to e.g. modify electronic device, comprises e.g. inserting the electrical devices into processing chamber, and evacuating the processing chamber down to specified pressure (DWPI Title) |
| Description: |
The present invention increases comparative tracking index (CTI) of electrical devices comprising of at least two electrodes electrically insulated with composite material containing glass particles, preferably glass fibres and metallic fillers embedded in polymer matrix, comprises e.g. (a) inserting the electrical devices into a processing chamber, (b) evacuating the processing chamber down to the pressure of 100, preferably 1 Pa, and (c) exposing the electrical devices in the processing chamber to oxygen ions of kinetic energy of 5-80 eV, preferably 10-30 eV. Use: The method is useful for: increasing CTI of electrical devices; modifying an electronic device, where the electronic device comprises a product that comprises insulators, rotors or commutators (all claimed); and improving the CTI performances of the polymer matrix composites by surface modification by means of oxygen plasma treatment. Advantage: The method: provides the CTI without requiring the need of ad- ditional polymer (halogenated polymers, phosphorus or nitrogen containing polymers), hence eco-friendly; utilizes the glass fibers embedded in polymer matrix without significant distortion of the bulk properties of insulating material; and utilizes the oxygen ions that do not only cause preferential heating of the surface of composite material containing glass particles, preferably glass fibres, embedded in polymer matrix, but interacts chemically with hydrogenated carbon material from which the polymer is obtained. |
| Drawings: |
 |
| Category: |
Physical Sciences |
| Technology application codes: |
Industrial manufacturing, material and transport , Physical and exact sciences |
| Market application codes: |
Other electronics related products, Industrial products |
| www: |
website |
| Patent offices: |
India |
